Mitsubishi Electric Q26UD(E)HCPU User Manual page 633

*1 The power-on time ratio indicates the ratio of programmable controller power-on time to one day (24 hours).
(When the total power-on and power-off times are 12 hours for each, the power-on time ratio is 50%).
*2 The manufacturer control number is the third digit from the leftmost of the alphanumeric characters written on the label
on the back of the SRAM card as shown below.
Written in the upper right hand corner
*3 For the High Performance model QCPU, these values are applicable when the serial number (first five digits) of the CPU
module is "04012" or later.
For the battery life of the CPU module with a serial number (first five digits) is "04011" or earlier, refer to Page 641,
Appendix 6.3.
*4 The actual service value may vary depending on ambient temperature.
● Use the battery within the time shown by the guaranteed value of the battery life.
● If the battery may be used exceeding the time shown by the guaranteed battery life value, perform the following.
• Perform boot operation to protect a program even if the battery dies at the programmable controller power-off.
• Back up programs and data after SM52 turned on (within the backup time after an alarm).
● Note that the SRAM card battery is consumed even while the programmable controller is powered on with the CPU
module battery connected.
● When the battery-low special relay SM52 turns on, immediately change the battery.
Even if an alarm has not yet occurred, it is recommended to replace the battery periodically according to the operating
condition.
● The SRAM card is not available for the Basic model QCPU.
Written in the lower right hand corner
Manufacturer
control number
APPENDICES
Manufacturer
control number
A
631